87426571 has 2 divisors, whose sum is σ = 87426572. Its totient is φ = 87426570.

The previous prime is 87426551. The next prime is 87426629. The reversal of 87426571 is 17562478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87426571 - 2¹³ = 87418379 is a prime.

It is not a weakly prime, because it can be changed into another prime (87426551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43713285 + 43713286.

It is an arithmetic number, because the mean of its divisors is an integer number (43713286).

Almost surely, 2^87426571 is an apocalyptic number.

87426571 is a deficient number, since it is larger than the sum of its proper divisors (1).

87426571 is an equidigital number, since it uses as much as digits as its factorization.

87426571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The square root of 87426571 is about 9350.2176980004. The cubic root of 87426571 is about 443.8277796347.

The spelling of 87426571 in words is "eighty-seven million, four hundred twenty-six thousand, five hundred seventy-one".